Operating mechanism for deep well pumps



July 19, 1938.

A. w. BURKS 2,124,026

OPERATING MECHANISM FOR DEEP WELL PUMPS Filed July 16, 1937 2 Sheets-Sheet l 5 F7 EDT" I flan/me P1430 145:

July 19, 1938; A, w, BURKS 2,124,026

OPERATING MECHANISM FOR DEEP WELL PUMPS Filed July 16, 1957 2 Sheets-Sheet 2 Patented July 19, 1938 OPERATING'MECHANISM FOR. DEEP WELL I PUlVIPS Arthur W. Burks, Decatur, Ill.

Application July 16, 1937, Serial No. 153,894

4 Claims.

This invention relates to operating mechanism for deep well pumps, and constitutes animprovement of the mechanism disclosed in my Patent No. 2,078,480, granted April 27, 1937. It is an object of this invention to provide a more simple and economical construction for securing a straight line motion for the pump rod and one that operates more efficiently in maintaining the parts in proper alignment.

The invention comprises the novel structure and combination of parts hereinafter described and more particularly pointed out and defined in the appended claims.

In the accompanying drawings which illustrate a preferred form of this invention and in which similar reference numerals refer to similar features in the different views:

Figure 1 is a sectional View through a well casing, illustrating my improved operating mechamsm.

Figure 2 is an elevational view of the walking beam and the novel mounting therefor.

Figure 3 is a fragmentary sectional view taken upon the line IIIIII of Figure 1 looking in the direction of the arrows.

Figure 4 is an enlarged sectional view taken upon the line IVIV of Figure 1 looking in the direction of the arrows.

In describing the invention, in relation to the drawings, and referring especially to Figure 1, it will be observed that there is shown a well tube I in which a sucker rod 2 is reciprocated by means of a walking beam 3 pivotally connected at one end to the rod 2 through the instrumentality of a head 4. The walking beam 3 is pivotally connected at an intermediate point to an eccentric rod 5 which is mounted at its lower end upon an eccentric 6 carried by a gear 1 mounted upon a shaft 8 and driven by a pinion 9.

In the present instance, the walking beam is shown as consisting of two spaced plates 3a suitably connected together, as by a Web ID spaced a short distance from the rear end. The rear ends of the plates 3a are preferably flanged as indicated at II and these flanged portions are arcuate upon their rear surfaces; the arcs forming the arcuate ends being struck from the pivot point I2 that connects the walking beam 3 and rod 2 as a center.

The mechanism described is mounted in a casing I3 which has a specially constructed portion I3a that forms a support for the rear end of the walking beam. The portion I311 is in the form of a plate having a bearing socket I4 in which a cylindrical bearing plug I5 is slidably mounted.

A screw I6 is threaded into the plug I5 and this screw has a head II outside of the casing. A

coil spring I8 is confined between the head I! and' the casing portion I3a. This spring which is quite strong normally tends to pull the plug I5 in an outward direction.

A strong pivot pin through the plug I5 and beyond the circumfer ence thereof upon both sides, as shown in Figures 2 and 4. The side plates 3a of the walking beam are sufiiciently spaced to straddle the plug I5, as shown in Figure 4, and the arcuate flanged portions II are provided centrally thereof with circular notches 29 for receiving the projecting portions of the pin I9 which is secured in such notches by screws 2| that connect the pin I9 with the walking beam. The outer ends of the notches 20 beyond the ends of the pin I9 are closed by suitable blocks 22 which have outer arcuate surfaces that correspond with the curvature of the arcuate end of the walking beam which bears against the plate I3a which has suitable bearing surfaces 23 for such purposes.

In the operation of the walking beam, the spring I8 will normally exert an outward pull upon the plug I5, and as the walking beam is secured to the plug I5 through the pin I9, the arcuate end of the walking beam will be maintained against the bearing surfaces 23. As the walking beam rocks against the bearings 23, the pivot pin I9 will simultaneously oscillate or rock in the bearing plug I5 which will move inwardly and outwardly in accordance with the requirement of the rocking movement of the walking beam. In other words, the pivot pin I9 responds to the rocking movement of the walking beam both as to rotation and inward and outward movement.

As the arcuate end of the walking beam is struck from the pivot I2 as a center, it will be evident that the pivot will always travel in a straight line.

I am aware that many changes may be made and numerous details of construction may be varied through a wide range without departing from the principles of this invention, and I, therefore, do not purpose limiting the patent granted I9 extends transversely hereon otherwise than is necessitated by the bearing surface in contact with said arcuate end and having a; horizontally extending guide socket adjacent said bearing surface, a slidable member mounted in said socket, a pivotal connection between said slidable member and arcuate end, yielding means acting upon said slidable member for maintaining said arcuate end against said bearing surface, and means for actuating said walking beam.

2. In operating mechanism for a reciprocating rod, a walking beam having a pivotal connection at one end with said rod, the other end of said beam having laterally spaced apart arcuate surfaces struck from said pivotal connection as a center, a frame having bearing surfaces in contact with said spaced arcuate surfaces to form a two-point bearing support, means on said frame defining a horizontally extending guide socket adjacent said bearing surfaces, a member mounted in said socket for sliding movement, a pivotal connection between said member and said other end of the beam, yielding means acting upon said member to maintain said arcuate surfaces against said bearing surfaces, and means for actuating said walking beam.

3. In operating mechanism for a reciprocating rod, a walking beam having a pivotal connection at one end with said rod, the other end of said beam having laterally spaced apart arcuate surfaces struck from said pivotal connection as a center, a frame structure having bearing surfaces in contact with said arcuate surfaces to form a two-point rocking bearing, said frame defining a horizontally disposed guide socket extending between said arcuate surfaces, a member mounted in said socket for sliding movement, a pivotal connection between said member and associated end of the beam, spring means for forcing said connection in a direction to maintain the arcuate surfacesagainst said bearing surfaces, and means for actuating said walking beam.

4. In operating mechanism for a reciprocating rod, a walking beam having a pivotal connection at one end with said rod, the other end of said beam having laterally spaced apart arcuate surfaces struck from said pivotal connection as a center, a frame having bearing surfaces in contact with said spaced arcuate surfaces to form a two-point bearing support, means on said frame defining a horizontally extending guide socket adjacent said bearing surfaces, a member mounted in said socket for sliding movement, a pivotal connection between said member and said other end of the beam, spring means acting upon said pivotal connection to maintain the arcuate surfaces against said bearing surfaces, means for adjusting the effect of said spring, and means for actuating said walking beam.

ARTHUR W. BURKS. 

